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  → /kernel/trunk/docs/sysfuncs.txt @ 119

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Ignore whitespace Rev 119 → Rev 120

/kernel/trunk/docs/sysfuncs.txt
926,6 → 926,54
process/thread by given slot.
======================================================================
====================== Function 18, subfunction 19 =====================
======================= Get/set mouse features. ======================
======================================================================
Parameters:
* eax = 18 - function number
* ebx = 19 - subfunction number
* ecx = subsubfunction number
ecx = 0 - get mouse speed
Returned value:
* eax = current mouse speed
ecx = 1 - set mouse speed
edx = selected value of speed
Returned value:
* function does not return value
ecx = 2 - get mouse delay
Returned value:
* eax = current mouse delay
ecx = 3 - set mouse delay
edx = selected value of delay
Returned value:
* function does not return value
ecx = 4 - set mouse pointer position
edx = [coordinate on axis x]*65536 + [coordinate on axis y]
Returned value:
* function does not return value
Remarks:
* Recommended speed of the mouse (in subfunction 1) from 1 up to 9.
The installed value is not inspected by the code of a kernel, on this use
cautiously, at incorrect value the cursor can "freeze".
Speed of mouse can be regulated through the application SETUP.
* Recommended delay of the mouse (in subfunction 3) = 10. Lower value
is not handled COM by mice. At the very large values the movement of
the mouse on 1 pixel is impossible and the cursor will jump
on the value of the installed speed (subfunction 1).
The installed value is not inspected by the code of a kernel.
* In subfunction 4 the installed value is not inspected by
the code of a kernel. Before usage it is necessary to find out current
screen resolution and at installation of a position to watch,
that the value of a position should do not fall outside
the limits the screen.
======================================================================
============ Function 19 - start application from ramdisk. ===========
======================================================================
Parameters:
2086,11 → 2134,11
* Structure of the color table is described in the standard
include file 'macros.inc' as 'system_colors'; for example,
it is possible to write:
sc system_colors ; variable declaration
... ; somewhere one must call
; this function with ecx=sc
mov ecx, [sc.work_button_text] ; read text color on
; buttin in working area
sc system_colors ; variable declaration
... ; somewhere one must call
; this function with ecx=sc
mov ecx, [sc.work_button_text] ; read text color on
; buttin in working area
* A program itself desides to use or not to use color table.
For usage program must simply at calls to drawing functions select
color taken from the table.
3240,11 → 3288,11
The data of the graphics screen (the memory area which displays
screen contents) are accessible to a program directly, without
any system calls, through the selector gs:
mov eax, [gs:0]
mov eax, [gs:0]
places in eax the first dword of the buffer, which contains
information on color of the left upper point (and, possibly, colors
of several following).
mov [gs:0], eax
mov [gs:0], eax
by work in VESA modes with LFB sets color of the left upper point
(and, possibly, colors of several following).
To interpret the data of graphics screen program needs to know
3806,7 → 3854,7
and at arrival of new message the system will wait.
For synchronization frame all work with the buffer by operations
lock/unlock
neg [bufsize]
neg [bufsize]
* Data in the buffer are considered as array of items with variable
length - messages. Format of a message is explained in
general description.
4372,3 → 4420,4
* 30 = 0x1E = not enough memory
* 31 = 0x1F = file is not executable
* 32 = 0x20 = too many processes